$ git clone -n https://src.fedoraproject.org/rpms/perl-Convert-UUlib.git /var/lib/mock/f40-build-2016082-46152/root/chroot_tmpdir/scmroot/perl-Convert-UUlib
Cloning into '/var/lib/mock/f40-build-2016082-46152/root/chroot_tmpdir/scmroot/perl-Convert-UUlib'...
$ git fetch origin 13ac4242827e93efeb8bf90d62b598aca9aff821:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Convert-UUlib
 * [new ref]         13ac4242827e93efeb8bf90d62b598aca9aff821 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13ac424 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild