$ git clone -n https://src.fedoraproject.org/rpms/kmail.git /var/lib/mock/f42-flatpak-app-build-59000922-6570155/root/chroot_tmpdir/scmroot/kmail
Cloning into '/var/lib/mock/f42-flatpak-app-build-59000922-6570155/root/chroot_tmpdir/scmroot/kmail'...
$ git fetch origin bdae0f9c97f76dacccc56789c4099af8c2bd9feb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmail
 * [new ref]         bdae0f9c97f76dacccc56789c4099af8c2bd9feb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdae0f9 25.04.0