$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-mysqld.git /var/lib/mock/f39-build-1540235-36468/root/chroot_tmpdir/scmroot/perl-Test-mysqld
Cloning into '/var/lib/mock/f39-build-1540235-36468/root/chroot_tmpdir/scmroot/perl-Test-mysqld'...
$ git fetch origin 561c997626304bd2c6180711a718c3a050215a27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-mysqld
 * [new ref]         561c997626304bd2c6180711a718c3a050215a27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 561c997 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild