$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-date.git /var/lib/mock/f43-build-59053119-6570674/root/chroot_tmpdir/scmroot/rust-gix-date
Cloning into '/var/lib/mock/f43-build-59053119-6570674/root/chroot_tmpdir/scmroot/rust-gix-date'...
$ git fetch origin b4fb50be8657f416d9b2e337fde614e3bc32d68c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-date
 * [new ref]         b4fb50be8657f416d9b2e337fde614e3bc32d68c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4fb50b Update to version 0.9.4; Fixes RHBZ#2357377