$ git clone -n https://src.fedoraproject.org/rpms/pcp2pdf.git /var/lib/mock/f45-build-21496-586/root/chroot_tmpdir/scmroot/pcp2pdf
Cloning into '/var/lib/mock/f45-build-21496-586/root/chroot_tmpdir/scmroot/pcp2pdf'...
$ git fetch origin d4373ac0ca026c2665a4d1317430e3ace908a352:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcp2pdf
 * [new ref]         d4373ac0ca026c2665a4d1317430e3ace908a352 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4373ac Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild