$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-bitmap.git /var/lib/mock/f45-build-41906-786/root/chroot_tmpdir/scmroot/rust-gix-bitmap
Cloning into '/var/lib/mock/f45-build-41906-786/root/chroot_tmpdir/scmroot/rust-gix-bitmap'...
$ git fetch origin c8c6db71964cbaa5e1b314d41ffc0fde4dfe8249:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-bitmap
 * [new ref]         c8c6db71964cbaa5e1b314d41ffc0fde4dfe8249 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8c6db7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild