$ git clone -n https://src.fedoraproject.org/rpms/rubygem-progressbar.git /var/lib/mock/f39-build-1499288-34744/root/chroot_tmpdir/scmroot/rubygem-progressbar
Cloning into '/var/lib/mock/f39-build-1499288-34744/root/chroot_tmpdir/scmroot/rubygem-progressbar'...
$ git fetch origin 4ae600779f6302e8db929f2599481ca8be25bce6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-progressbar
 * [new ref]         4ae600779f6302e8db929f2599481ca8be25bce6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ae6007 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild