$ git clone -n https://src.fedoraproject.org/rpms/perl-Mojo-Pg.git /var/lib/mock/f39-build-1436843-32095/root/chroot_tmpdir/scmroot/perl-Mojo-Pg
Cloning into '/var/lib/mock/f39-build-1436843-32095/root/chroot_tmpdir/scmroot/perl-Mojo-Pg'...
$ git fetch origin b63195813a3a822f9b10d94b5ee924e17856ecbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mojo-Pg
 * [new ref]         b63195813a3a822f9b10d94b5ee924e17856ecbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b631958 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild