$ git clone -n https://src.fedoraproject.org/rpms/perl-Convert-UU.git /var/lib/mock/f40-build-2016078-46152/root/chroot_tmpdir/scmroot/perl-Convert-UU
Cloning into '/var/lib/mock/f40-build-2016078-46152/root/chroot_tmpdir/scmroot/perl-Convert-UU'...
$ git fetch origin 024c3c107bf5a172618a5e99ff62807308f711fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Convert-UU
 * [new ref]         024c3c107bf5a172618a5e99ff62807308f711fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 024c3c1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild