$ git clone -n https://src.fedoraproject.org/rpms/perl-Sub-Info.git /var/lib/mock/f45-build-26387-617/root/chroot_tmpdir/scmroot/perl-Sub-Info
Cloning into '/var/lib/mock/f45-build-26387-617/root/chroot_tmpdir/scmroot/perl-Sub-Info'...
$ git fetch origin 10a5d4ec490a1123b3e5e9cb2302414e25bfc386:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sub-Info
 * [new ref]         10a5d4ec490a1123b3e5e9cb2302414e25bfc386 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10a5d4e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild