$ git clone -n https://src.fedoraproject.org/rpms/perl-LWP-MediaTypes.git /var/lib/mock/f45-build-24340-603/root/chroot_tmpdir/scmroot/perl-LWP-MediaTypes
Cloning into '/var/lib/mock/f45-build-24340-603/root/chroot_tmpdir/scmroot/perl-LWP-MediaTypes'...
$ git fetch origin eb5cd6dd055a00ff19ce9392ee54697d47d4df4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-LWP-MediaTypes
 * [new ref]         eb5cd6dd055a00ff19ce9392ee54697d47d4df4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb5cd6d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild