$ git clone -n https://src.fedoraproject.org/rpms/rust-bytemuck.git /var/lib/mock/epel9-build-59194730-6571671/root/chroot_tmpdir/scmroot/rust-bytemuck
Cloning into '/var/lib/mock/epel9-build-59194730-6571671/root/chroot_tmpdir/scmroot/rust-bytemuck'...
$ git fetch origin fffce0020319dd8350214ff75f752774064917e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bytemuck
 * [new ref]         fffce0020319dd8350214ff75f752774064917e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fffce00 Update to version 1.23.0; Fixes RHBZ#2362820