$ git clone -n https://src.fedoraproject.org/rpms/pam_krb5.git /var/lib/mock/f41-build-side-1-2650358-27586/root/chroot_tmpdir/scmroot/pam_krb5
Cloning into '/var/lib/mock/f41-build-side-1-2650358-27586/root/chroot_tmpdir/scmroot/pam_krb5'...
$ git fetch origin 7b8785972947ef7d11070d088f5d70d53efa7ab9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pam_krb5
 * [new ref]         7b8785972947ef7d11070d088f5d70d53efa7ab9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b87859 convert license to SPDX