$ git clone -n https://src.fedoraproject.org/rpms/postgresql15.git /var/lib/mock/f41-build-1023986-18174/root/chroot_tmpdir/scmroot/postgresql15
Cloning into '/var/lib/mock/f41-build-1023986-18174/root/chroot_tmpdir/scmroot/postgresql15'...
$ git fetch origin d0e2064f5678062cb4bff8b0a2bb22f36cd7f332:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/postgresql15
 * [new ref]         d0e2064f5678062cb4bff8b0a2bb22f36cd7f332 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0e2064 Perl 5.40 rebuild