$ git clone -n https://src.fedoraproject.org/rpms/obs-studio-plugin-webkitgtk.git /var/lib/mock/f45-build-20432-570/root/chroot_tmpdir/scmroot/obs-studio-plugin-webkitgtk
Cloning into '/var/lib/mock/f45-build-20432-570/root/chroot_tmpdir/scmroot/obs-studio-plugin-webkitgtk'...
$ git fetch origin 7eafdf72694b136600d5d63894e90386688f860f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/obs-studio-plugin-webkitgtk
 * [new ref]         7eafdf72694b136600d5d63894e90386688f860f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7eafdf7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild