$ git clone -n https://src.fedoraproject.org/rpms/perl-Image-ExifTool.git /var/lib/mock/f45-build-24247-602/root/chroot_tmpdir/scmroot/perl-Image-ExifTool
Cloning into '/var/lib/mock/f45-build-24247-602/root/chroot_tmpdir/scmroot/perl-Image-ExifTool'...
$ git fetch origin b5f53c793bd51ca35cd7e3c9e1be99f182908602:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Image-ExifTool
 * [new ref]         b5f53c793bd51ca35cd7e3c9e1be99f182908602 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5f53c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild