$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Warn.git /var/lib/mock/f39-build-1439635-32272/root/chroot_tmpdir/scmroot/perl-Test-Warn
Cloning into '/var/lib/mock/f39-build-1439635-32272/root/chroot_tmpdir/scmroot/perl-Test-Warn'...
$ git fetch origin 1ed8a8c4d47d61af47981ba395c329ac767e0051:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Warn
 * [new ref]         1ed8a8c4d47d61af47981ba395c329ac767e0051 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ed8a8c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild