$ git clone -n https://src.fedoraproject.org/rpms/forge-srpm-macros-epel.git /var/lib/mock/f42-build-3403081-45134/root/chroot_tmpdir/scmroot/forge-srpm-macros-epel
Cloning into '/var/lib/mock/f42-build-3403081-45134/root/chroot_tmpdir/scmroot/forge-srpm-macros-epel'...
$ git fetch origin 9e491435f90a6babae7d991017d2a44f42660406:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/forge-srpm-macros-epel
 * [new ref]         9e491435f90a6babae7d991017d2a44f42660406 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e49143 Added the README