$ git clone -n https://src.fedoraproject.org/rpms/rubygem-bcrypt.git /var/lib/mock/f41-build-819763-151889/root/chroot_tmpdir/scmroot/rubygem-bcrypt
Cloning into '/var/lib/mock/f41-build-819763-151889/root/chroot_tmpdir/scmroot/rubygem-bcrypt'...
$ git fetch origin b6b4a4780385b54ff1310bd060fb8f31dc977440:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-bcrypt
 * [new ref]         b6b4a4780385b54ff1310bd060fb8f31dc977440 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6b4a47 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild